Crossword Genius

Sonnet king composed in part of London (10)

Ross

I believe the answer is:

kensington

'part of london' is the definition.
(I've seen this before)

'sonnet king composed' is the wordplay.
'composed' indicates an anagram.
'sonnet'+'king'='sonnetking'
'sonnetking' with letters rearranged gives 'KENSINGTON'.

'in' acts as a link.

(Other definitions for kensington that I've seen before include "neighbour of Chelsea" , "Royal Albert Hall area" , "part of London" , "London palace" , "Royal Albert Hall location" .)

I've seen this clue in The Telegraph.
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